US1457999A - Concrete form - Google Patents

Description

June 5, 1923.

W. J. PEDERSEN CONCRETE FORM rig n Filed Sept. 20, 1920 2 Sheets-Sheet l Mam m m 1. U A L 0 d mm M M m WITNESSES FM): v, "I?

June 5, 1923. 1,457,999 w. 1. PEDERSEN CONCRETE FORM Original Filed Sept. 20, 1920 Sheets-Sheet 2 E'.11' EFT/Wig WITNESSES \A/ALDEMAA (JUL/U3 ECDEES l1 TTORIVE Y S same tame a, teas. I

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NEXUS PEDEEBEH, @E' FLQJMIL PARK, NEW .YGE'EK.

CQNGEETE FQW.

Application filed as ume: to, me, semi To all whom it may concern:

Be it known that l, WAIDEMAR Jones ,PEoERsEN, a citizen of the United States, and a resident of Floral Park, in the county of Nassau and State of New York, have invented a new and Improved Concrete Form, of which the following is a full, clear, and exact description.

This invention relates to a method and apparatus for molding and forming cementitious material into units for building purposes.

An object of the invention is the provision of a method for forming a plurality of sections of cementitious material in a simple and ready manner so that they may be quickly assembled into a plurality of forms for building purposes.

Another object is the provision of a method in which a minimum amount of time and labor need be expended to achieve the desired results.

A further object is to provide a method in which the operator thereof need have only a minimum amount of experience or skill in handling and mani ulating these forms.

A still further ob ect is to provide a form for cementitious material which is capable of adjustment in such manner as to result in the formation of cementitious units adaptable when assembled to form a plurality of building structures, such as colums, posts,

- stairways, etc.

Another object resides in the provision of the particular arrangement and construction of parts as will be apparent from a consideration of the following description and claims taken in connection with the drawings.

In the process of building structures of various forms from cementitious material, the formation of molds for the material involves a great expenditure of time and labor and requires a high degree of experience and skill in the construction and operation of the molds. Most forms and molds require to be set in places where the building structure is to be finally located, and are, in most cases, useless after having once been used. My invention aims to eliminate these disadvantages, and others which will be apparent hereinafter, and to that end comprises a form or mold which is capable of assembly in any suitable location and can be quickly assembled and dismantled. It is in herently capable of ready adjustment for We. times. fienewefl April aa-reae.

the purpose of forming molds of difierent dimensions and difierent shapes, and, from itsconstruction and operation, cementitious units can be formed from which columns, posts, Stairways and other similar structures may finally result.

In general, the invention comprises the formation of a plurality of sections of cementitious material adjacent each other on a flat plane or platform with a connection extendlng between adjacent faces of the sectlons, and when this unit is set the sections are removed from the form and bent with respect to each other to make the desired building structure. The particular embodiment of the invention shown will be apparent from the description and claims hereinafter Set forth in view of the drawings.

The invention is illustrated in the drawings, of which- Flgure 1 is a plan view of the form with a portion of the cementitious material in P P;

Figure 2 is a longitudinal section taken on the line 2-2 of Figure l;

Figure 3 is a partial perspective view of K a modified portion of the form;

Figure 4 is a detail view of part of a form;

Flgure 5 is an enlarged section of a modified form;

Figure 6 is a section taken on the line of Figure 5;

Figure 7 is a section taken on the line 7-7 of Figure 6 and shown enlarged;

Flgure 8 is a partial perspective view of a plurality of sections about to be formed into a desired unitary structure;

F1gure 9 is a perspective view of a chimp ey formed in accordance with my invenion;

Figure 10 is a sectional view of a form adapted for the manufacture of Stairways; an

Figure 11 is a partial sectional view of a stairway formed in the mold, as shown in Figure 10.

As shown in the drawings, the invention is set forth as embodied in a mold or form for constructing columns, posts, chimneys and Stairways, although various other structures may be made by the use of this form in a slightly diii'erent manner without such change in its construction and operation as would depart from the spirit of the invention.

As shown in Figures 1 and 2, one form of mold comprises a pair of U-shaped metal bars 1 and 2 set on end with the bases of the U bars facin each other. Extending across between the iars 1 and 2 are a plurality of V-shaped metallic plates 3 so arranged that the apex of the V is disposed upwardly and the outer ends of the limbs of the V rest on the bottoms of the bars 1 and 2. This structure may be disposed on any suitable platform and in any desired location separate from the place where the building structure to be formed is to 'be ultimately disposed. A mesh 4 of any suitable material, such as wire, is placed over the plates 3 to form a re-enforcing agent for the cementitious unlt as well as an integral connection extending between separate sections. This mesh 4 is shown as an integral fabric extending from one end of the unit to the other, but it may not be integral but be formed in sections, provided the mesh is always disposed so as to extend between the faces of adjacent sections. A pluralit of fiat bars 5 are arranged to extend etween the bars 1 and 2 directly over the apex of the V plates 3. The cementitious material 6 is then poured into this form until its level reaches the top of the flat bars 5.

Upon consideration of Figure 2, it will be seen that the material 6 extends from the bottom of the U bars 1 and 2 up to the level corresponding to the to of the flat bars 5 and is divided into a p urality of sections which are separated from each other by the V bars 12 and the flat bars 5, the only connection between the various sections being the mesh fabric 4 which extends between each section. As mentioned above, this fabric may be an integral fabric extending through the whole unit or may merely be a lurality of small sections of fabric, provided each section of fabric extends between the edges of adjacent sections. This fabric forms a connection to the sections which would otherwise be entirely separate. The V plates 3 and the flat bars 5 ma extend beyond panel bars 1 and 2 and so oing extend through triangular apertures 7 and rectangular apertures 8, respectively, in the bars 1 and 2. The vertical distance between the apertues 7 and 8 may be arranged to accommodate the different thicknesses of fabric. Similarly, the longitudinal distances between the apertures 7 and 8 may be disposed to provide units of various widths.

imilarly, the length of each unit and section can be adjusted by moving the U bars 1 and 2 further apart, the plates 3 and the bars 5 sliding into apertures of the U bars during their movement. Therefore, it is readily perceived that this form is capable of adjustment in construction to suit any requirement with comparative case.

In Figure 3 a wooden bar 9 is shown having in one face apertures 10 and slots 11,

Mamet corres onding to the apertures 7 and 8 above descri ed except that the apertures 10 and 11 do not extend through the bar 9. This sort of bar 9 is used when a definite sized unit is required, since the plate 3 and bars 5 when used with this bar 9 cannot be adjusted longitudinally therein.

In Figure 4; one of the V-shaped bars, de noted 12, is shown. It will be observed that the angle between thelimbs of the V is 90. This angle is preferable when structures such as single columns or posts or stairways are to be produced, where the angles between the adjacent faces are 90 angles. Of course, it is understood that any other desired angle may be used than the one shown.

11 Figure 5 a U bar is shown which, along its lower edge, is provided with V bars 12 and bars 14 spaced a definite distance apart in the manner above described. After a plurality of cementitious units are formed with respect to the. bars and plates on the lower portion of the U bar, a covering of wood or other suitable material, such as 14', may be placed over this unit, and another unit maybe formed above this support or platform. This unit can be, formed by reason of the construction of the U bar with another plurality of plates 13 and bars 15, which may be disposed apart at different distances than the distance between the bars and plates in the lower level of the U bar. This provides means whereby two units of different dimensions may be formed, using the one set of U bars.

In Figure 6 is shown a modification of the structure which is particularly adaptable for cementitious units which have considerable length, on the order of eight or ten feet. In this case, the V bar 12 is provided at intervals throughout its upper edge with apertures in which slotted pins 16 are inserted. These pins are provided with spaced vertically projecting limbs 16 and 17 between which a slot is formed and through which the flat bars 14 may extend. These limbs 16 and 17, therefore, provide means whereby the bars 14 can be maintained in alignment with the upper edge of the V plates 12 throughout their length.

In Figure 8 is shown a plurality of sections 19, 20, 21 and 22 of a cementitious unit which has been formed in accordance with the construction shown in Figure 2.

When the cementitious unit has become set, it is removed from the form and the various sections are bent with respect to each other to form a column or post. The only connection which holds the sections together is the extension between adjacent faces of the sections of the fabric 4. Therefore, each section can be bent, with respect to an adjacent section, into the desired form, which in Figure S is a square post. B cutting out a portion, such as 23, in one e go of one of edges adjacent newness the sections, such as 19, the ends of the wire, such as 22, may be joined and tied to similar ends of the abutting sections to tie the units together.

The fabric may be tied together at intervals throu hout its vertical length or maybe tied togefiier completely throughout its length.

From an examination of Figure 8 it is seen that by providing V .plates ,12 with a right angle between the limbs thereof, sections are formed which have their lower the corresponding edges of abutting sections and form a right angle therebetween, which, when the sections are bent into place, lie fiat against each other and result in a structure or unit having a rectangular configuration. The spaces, denoted in Figure 8 by numerals 19, may be filled in with cement or other suitable material to form the corners of the structure.

after the sections have been bent and tied together. i

In Figure 9 is shown a chimney structure made in accordance with the above-mentioned method and by means of the forms described. This chimney may be then covered with stucco 32, and a sheet of tin 31 may be embedded along its upper edge, in the c-ementitious material of the chimney, and along its lower edge, connected in any suitable manner with the roof portion, whereby a tight joint is made between the chimney and the roof to prevent leakage.

In Figure 10 is shown a modified form of mold in which the adjacent sections are of different dimensions and in which alternate sets of V bars and flat bars are inverted with respect to each other.

The cementitious material is formed in sections, such as 23, 24, 25 and 26, with the fabric 27 extending through the same as a re-enforcing element and a connection between the sections. These sections are constructed by the use of V plates and bars, in the manner above described, and in connection with a plurality of U bars, such as 28.

In Figure 11 is shown the product formed by the bending of the unit constructed in the mold shown in Figure 10. This product is a stairway, of which the sections 23 and 25 form the steps and the sections 24 and 26 form the risers. The steps 23 and 25 being longer than the risers 24 and 26 are high, necessitated the modified form of mold shown in Figure 10. Furthermore, the fact that sections 23 and 24 are bent with respect to each other in different directions than the sections 25 and 26, necessitated the inversion of successive V bars and flat bars. The open spaces formed after the bending takes place are filled in in the usual manner with cementitious material.

It is thus apparent that by a broad method, which is capable of operation in a simple and 'ready manner by operators not necessarily experienced or skilled in this art, I can produce structures of various forms much more economically than heretofore has been done and with a minimum expenditure of. time. The particular apparatus used in the operation of this method is exceedingly simple and capable of ready assembly and disassembly, ed to give a wide variationin the dimensions and forms of the structures produced thereby.

What I claim is:

1. A concrete structure comprising a plurality of separate sections disposed adjacent each other, connections extending between the sections, the portions of abutting faces of adjacent sections being angularly disposed with respect to each other, and other portions of abutting faces of the adjacent sections being disposed substantially fiat against each other.

2. A cementitious structure comprising a plurality of separate sections disposed adjacent each other, connections between the and can be adjusta sections, the portions of abutting faces of adacent sections being disposed at right angles to each other, and other portions of abutting faces of adjacent sections being disposed substantially flat against each other.

3. A concrete structure comprising a plu-v rality of sections disposed adjacent each other, and a re-enforcing element extending between the sections, the abutting faces of adjacent sections on one side of the re-enforcing element being disposed angularly with respect to each other, and the abutting faces of adjacent sections on another side of the re-enforcing element being disposed substantially flat with respect to each other.

4. A concrete structure comprising a plurality of sections disposed adjacent each other, are-enforcing element extending between adjacent sections, the abutting faces of the sections on one side of the re-enforcing element being disposed at right angles to each other, and the abutting faces of adjacent sections on the other side of the re-inforcing element being disposed substantially flat with respect to each other.

5. A cementitious structure comprising a plurality of sections disposed adjacent each other, a re-enforcingelement extending between the sections, the abutting faces of alternate adjacent sections on one side of said re-enforcing element being disposed an gularly with respect to each other, and the 'abuttingfaces on the other side of the re-enforcing element between said sections being disposed substantially flat against each other.

6. A cementitious' structure comprising a plurality of separate sections disposed adjacent each other, a re-enforcing element extending between the sections, the abutting faces of alternate adjacent sections on one side of said re enforcingrelement' beingdisposed angularly with respect 'to each. other,-

andthe abutting faces on the other'sidemof [the re-enforcin rielement between" said sec of spaced, parallel, lon; ;itiu't linal-bar-frames,'-

a plurality of V-sha'ped bars disposed transversely with respect to said frames, and a.

plurality of flat bars placed over the V-bars, their lower edges coinciding with the apex line of the V bars. j t 4 .8. A concrete form comprising a plurality of spaced, parallel channel-bars, a plurality of inverted- V-shaped' bars disposed transversely with respect to the channel bars, and a plurality of flat bars disposed over the V- bars, their lower edges disposed in line with the apex line of the V-bars.

' 9. concrete form comprising a plurality it saw 'ofparallel channelbars, a plu'rality of V-'.

shaped-bars disposed transversely with respect to the channel bars, means on the channel bars "to receivethe'ends of the V bars slidably therein, a plurality of fiat bars disposed over the V bars, and means on the channel bars to adjustably receive the flat 10. A concrete form comprisin a plurality of spaced, parallel frame mem ers, a plurality of ang e bars disposed transversely with respect thereto and forming a plurality of separate sections, a re-enforc'ing element disposed over the angle bars, a plurality of flat bars disposed over the re-enforcingelement and in line with the angle bars, and meanson the angle bars to engage portions of the flat bars to maintain the sam in alignment with the angle bars.

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